Volodya Pozdneyev
— Petya
Тамара Трушина
— Mother
Yuriy Minin
— Teacher
Георгий Вицин
— Magician Now (voice)
Ирина Карташева
— Mother (voice)
Владимир Лепко
— Policemen / Executioner (voice)
Григорий Шпигель
— Teacher from the future (voice)
Leonid Eremeev
— Mustaches man (voice)
Анатолий Папанов
— Street sweeper Ivan / Robot (voice, incredited)
Klara Roumianova
— Girl from the future (voice, uncredited)
Юрий Хржановский
— Stone age people / Teacher from the past / Magician Now (voice, uncredited)